1. INTRODUCTION Titanium dioxide (TiO2) is a relatively inexpensive, nontoxic, and easy to
handle material, which is of great interest, as evidenced by the wide number of applications …

Air quality transcends all scales with in the atmosphere from the local to the global with
handovers and feedbacks at each scale interaction. Air quality has manifold effects on …

This report is the first complete assessment of the science of climate change since Working
Group I (WGI) of the IPCC produced its second report Climate Change 1995: The Science of …

Biomass burning (BB) is the second largest source of trace gases and the largest source of
primary fine carbonaceous particles in the global troposphere. Many recent BB studies have …

This comprehensive text describes the atmospheric processes, numerical methods, and
computational techniques required for a scientist to successfully study air pollution and …

A proton transfer reaction mass spectrometer (PTR-MS) system has been developed which
allows for on-line measurements of trace components with concentrations as low as a few …

Proton-transfer reaction mass spectrometry (PTR-MS) is a technique developed almost
exclusively for the detection of gaseous organic compounds in air. Volatile organic …

A system for on-line measurements of trace components with concentrations as low as a few
pptv has been developed on the basis of proton transfer reactions. Medical applications by …

A global climatological distribution of tropospheric OH is computed using observed
distributions of O3, H2O, NOt (NO2+ NO+ 2N2O5+ NO3+ HNO2+ HNO4), CO, hydrocarbons …

We describe a global three‐dimensional model for tropospheric O3‐NOx‐hydrocarbon
chemistry with synoptic‐scale resolution. A suite of 15 chemical tracers, including O3, NOx …